/Engine/Plugins/MovieScene/CustomizableSequencerTracks/Source/CustomizableSequencerTracks/Public/SequencerTrackInstanceBP.h
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(Category="Sequencer", DisplayName="OnDestroyed", BlueprintImplementableEvent, Meta=(CallInEditor=true)) void K2_OnDestroyed()